Python3实现三菱PLC串口通讯(附源码和运行图)

本文主要是介绍Python3实现三菱PLC串口通讯(附源码和运行图)，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

基于PyQt5通过串口通信控制三菱PLC

废话不多说，直接上源码

"""
# -*- coding:utf-8 -*-
@Project : Mitsubishi
@File : Main_Run.pyw
@Author : Administrator
@Time : 2024/05/09 下午 04:10
@Description : PyQt5界面主逻辑
@Software:PyCharm
"""
import sys
from PyQt5 import QtWidgets, QtCore
from PyQt5.QtWidgets import QApplication, QMainWindow, QMessageBox
from MainUI import Ui_MainWindow
import qtawesome as qta
import serial.tools.list_ports
import Mitsubishi_APIclass MainWindow(QMainWindow, Ui_MainWindow):def __init__(self, parent=None):super(QMainWindow, self).__init__(parent)self.setupUi(self)self.label_onOff.setHidden(True)self.comboBox_onOff.setHidden(True)self.comboBox_mode.currentIndexChanged.connect(self.changeMode)self.refreshSerialPorts()self.pushButton_refresh.clicked.connect(self.refreshSerialPorts)self.pushButton_execute.clicked.connect(self.execute)self.pushButton_refresh.setIcon(qta.icon("ei.refresh"))self.pushButton_execute.setIcon(qta.icon("ei.hand-up"))def changeMode(self):"""切换模式:return:"""if self.comboBox_mode.currentText() == "读取":self.label_number.setHidden(False)self.comboBox_number.setHidden(False)self.label_onOff.setHidden(True)self.comboBox_onOff.setHidden(True)else:self.label_number.setHidden(True)self.comboBox_number.setHidden(True)self.label_onOff.setHidden(False)self.comboBox_onOff.setHidden(False)def refreshSerialPorts(self):"""绑定串口列表至控件:return:"""# 清除当前下拉列表中的项目self.comboBox_serialPort.clear()# 获取可用串口列表ports = serial.tools.list_ports.comports()# 将串口名称添加到下拉列表中for port in ports:self.comboBox_serialPort.addItem(port.device)def execute(self):"""执行操作:return:"""serial_port = self.comboBox_serialPort.currentText()  # 串口mode = self.comboBox_mode.currentText()  # 模式soft = self.comboBox_soft.currentText()  # 输入输出soft_num = self.lineEdit_soft_num.text()  # 软元件数值if soft_num:softComponent = soft + soft_num.strip()if mode == "读取":read_num = self.comboBox_number.currentText()recv = Mitsubishi_API.PLC_Read(serial_port, softComponent, read_num)self.textBrowser.append("<span style='color:#00FFA9'>读取PLC返回值:{}</span>".format(recv))else:onOff = self.comboBox_onOff.currentText()Mitsubishi_API.PLC_FORCE(serial_port, softComponent, onOff)self.textBrowser.append("<span style='color:#4848E9'>写入PLC命令完毕!</span>")else:QMessageBox.warning(self, '警告', '请填写完整软元件!', QMessageBox.Yes | QMessageBox.No,QMessageBox.Yes)if __name__ == '__main__':QApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling)app = QtWidgets.QApplication(sys.argv)window = MainWindow()window.show()sys.exit(app.exec_())